Preparation and photocatalytic properties of Zn2+/nano MoS2 intercalation compounds

Abstract:

In order to improve the photocatalytic performance of molybdenum disulfide,Zn2+/nano-molybdenum disulfide intercalation composite catalyst was prepared by stripping-intercalation-re-stacking method. The microstructures of the composite catalysts were analyzed by SEM,UV-Vis and XRD; The performance of composite catalyst for catalytic degradation of methyl orange in sunlight was also studied.The results show that the prepared Zn2+/ nano - molybdenum disulfide intercalation composite catalyst has a good crystal form, the interlayer spacing increases to 4.3934 nm, the particle size increases to 13.1 nm, and a new intercalation characteristic peak (001) appears. The prepared composite catalyst has a lamellar structure, and the non - uniform loading of Zn2 + nanoparticles is on the surface of molybdenum disulfide nanosheets and is mainly distributed in the smaller regions of the lamellae. The absorption of UV-Visible light is obviously higher than that of molybdenum disulfide powder and has the absorption peak. It is proved that the catalytic performance of the composite catalyst in the sunlight is much higher than that of the nanometer MoS2 powder from the beginning, and the degradation efficiency is linear and can reach 70.435% at 6h.

Key words:Nano molybdenum disulfide; Photocatalytic; Intercalation; Sunlight